High-temperature heat capacity of samarium and erbium titanates with pyrochlore structure

Аннотация

Titanates Sm₂Ti₂O₇ and Er₂Ti₂O₇ with pyrochlore structure have been prepared by solid-phase synthesis in air from stoichiometric Sm₂O₃ (Er₂O₃)–TiO₂ mixtures sequentially at 1673 and 1773 K. Hightemperature heat capacity of the oxide compounds has been determined by differential scanning calorimetry. Their thermodynamic properties have been calculated from experimental temperature dependence C_p = f(T).